I went with a set of Magnaflows with a 2.5 inch custom Y-pipe. It sounds really good and did add a little bit of power. I recommend getting a good name brand like 3Rotor said. The HKS Carbon TI sounds pretty good on the 2JZ, especially if it's boosted.

 

I think I'm gunna go with hks, but I'm gunna go the NA route. So would it still sound as good? I was thinking about some apexi N1's to. With either brand I wanna run at leat 2.5 to 3" piping.

 

i say go for the apexi n1's i did 2.5" catback into duals and i love it sounds pretty mean imo, not raspy at all and for the price i think they are the best for the money